(“Jesse” or “jesse”)
上面的表达式测试是否
"Jesse"评估为
True。如果是这样，则表达式将返回它；否则，它将返回
"jesse"。该表达式等同于编写：
"Jesse" if "Jesse" else "jesse"
因为
"Jesse"是一个非空字符串，所以它将 始终 求值为
True并因此返回：
>>> bool("Jesse") # Non-empty strings evaluate to True in PythonTrue>>> bool("") # Empty strings evaluate to FalseFalse>>>>>> ("Jesse" or "jesse")'Jesse'>>> ("" or "jesse")'jesse'>>>这意味着表达式：
name == ("Jesse" or "jesse")基本上等同于编写此代码：
name == "Jesse"
为了解决您的问题，您可以使用
in运算符：
# Test whether the value of name can be found in the tuple ("Jesse", "jesse")if name in ("Jesse", "jesse"):或者，您可以小写
namewith的值，
str.lower然后将其
"jesse"直接与进行比较：
# This will also handle inputs such as "JeSSe", "jESSE", "JESSE", etc.if name.lower() == "jesse":
